Tank for transformers and the like



Jul 22 1924. 1,502,204

' L. G. M CLINTOCK TANK FOR TRANSFORMERS AND THE LIKE Filed Sept. 2a) 1923 M m j I I "will" 7 7 unillllllllll l} (p INVENTOR I .Be it known that I, LEWIS G.

is difl'icult to 'pipes to the interior.

Patented July 22, 192 4.

UNITED SIXIATES 1,502,204 PATENT OFFICE.

LEWIS e. ncormroox, or PITTSBURGH, PENNSYLVANIA, ASSIGNOR T0 PITTS- 1 BURGH rmnsroma COMPANY, A CORPORATION or PENNSYLVANIA.

TANK FOR TRANSFORMERS AND THE LIKE.

Application filed September 26, 1923. Serial No. 664,948.

To all whom it may concern:

MoCLIN- TOCK, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in- Tanks for Transformers and'the like, of

which the following is" a specification.

This invention relates to tanks for transformers and the like, and particularly to a tank having pipe connections to its interior for instance, for the circulation of a coo11ng fluid through cooling coils within the tank.

The body of the tank is often formed of sheet steel which is corrugated to give a large cooling surface and with such a tank it provide for the passage of the tank and the pipes are complicated in form, due to the corrugated shape of the metal, and-are weak and likely to fail under the strains of service.

The object of this invention is to over- ,come these difliculties and provide a tank in which the pipe connections to the interior of the tankwill be strong and reliable in service and inexpensive in cost- In the accompanying drawings illustrating the invention,

Fig. 1 is a perspective view of a transformer tank showing the pipe connections thereto.

Fig. 2 is a vertical sectional view ofthe same taken on line 2, 2 of Fig. 1, and

Fig. 3 is an enlarged view of the pipe connections shown in Fig. 2.

In the embodiment of the invention shown the drawings, a transformer tankT has b in its body portion provided with corrugations ,5 formed by bending of the sheet metal of the body portion. The upper ends 6. of the corrugations are inclined downwardly and nt over in arched form to a central welded portion 7 forming the crest of each corrugation. The ends of the inner bends of the corrugations are hammered outward in inclined form as indicated at 8 so as to form an inclined ridge extending around the end of the body portion of the transformer and just within the top of this inclined surface is fitted the' vertical flange 9 of the top ring 10 formed b a curved angle iron having its horizontai flange 11 extending outwardly to support the transformer tank ends 8 of the corrugations.

The joints between of a portion plate P carrying the pipe connections leading to the interior of the tank. The corru- 1 gations 5 on each side of the corrugations 15 are out along the lines 16 to receive the side edges of the plate P and to be welded thereto, and the top edge of the plate P is positioned and formed to be continuous with the end ridge formed by the bent over This upper edge 17 of the plate P is welded at 18 to the vertical flange 9 of the end ring 10 in the. same manner as the surfaces 8 are welded to said ring. Similarly, the plate P is welded to the adjacent corrugations 5 on. each side along the lines 16.

The shortened corru ations 15 are formed at their upper ends hy arching over the metal to meet in a central weld 20 similar to the ends of the corrugations 5 and the inner ends of these corrugations 15 are bent outward as indicated at 21 to form inclinedportions similar to the portions 8 having a continuous ridge 22 extending between the'opposite corrugations 5 on each side. The lower edge of the plate P just fits within this ridge 22 and is welded thereto as indicated at 23. The plate P is therefore fitted and welded into the space formed by the shortening of the corrugations 15.

Carried by the plate P are the stufling oxes B passing the pipes 25 to the interior of thetank. Each stufling box comprises an annular bod portion 26 of machined steel having a pipe aperture 27 and a stuffing recess 28 in which the packing 29 is com pressed by the packing ring 30 pressed inward'by'the bolts 31. The body portion 26 of the stuffing box is fitted within a correspondingly shaped recess in the plate P,-the

formed between the edge of and the body 26. The stufiing box B is thus welded in place in the plate P which in turn is welded in place as a portion of the body of the tank T.

In the tank of this invention the tank body is relieved of the direct strains of the pipe connections, the plate P intervening between the tank body and these connec-v the strains transmitted to the tank are widely distributed. and correspondingly reduced in intensity. The construction is simple and economical, merel requiring the corrugations 15 of the tan' to be made shorter than theiothers so as to leave the space into which is fitted the'plate P carrying the pipe connections so that the latter is flush with the inside of the tank. The tank is of sheet steel, the plate P of plate steel and the body 26 of the stufiing box B is of machined steel so that the intermediate welds areeasily made and strong bonds provided which are secure against failure or leakage.

I claim 1. The combination in a tank for transformers and the like, of a sheet steel tank body formed with corrugations having a portion cut away, a plate steel member fitted in said cut away portion and welded to the adjacent edges of the tank body, and a pipe connection carried by said plate.

2. The combination in a tank for transformers and thelike, of a tank body having corrugations with one or more of said corrugations shorter than the others so as to leave a space at the end of the tank body, a plate member fitted in said space and welded pipe connection welded to said plate.

3. The combination in a tank for transformers and the like, of a tank body having corrugations closed at their ends and having inner portions forming an end ridge portion cut away, a plate steel member fitted in said cut away portion and welded to the adjacent edges of the tank body, and a pipe connection carried by said plate, the edges of the plate being turned over adjacent said pipe connection and welded thereto at both the outside and inside.

5. The combination in a tank for transformers and the like, of a tank body with corrugations formed at their ends into a ridge, an end member extending around. the tank and welded to said ridge, one or more of said corrugations being shortened, a plate member having one of its edges welded to the end of said shortened corrugations and its opposite edge welded to said end member, and a pipe connection carried by said plate member.

6. The combination in a tank for trans formers and the like, of a tank body with corrugations formed at their ends into a ridge, an end member extending around the tank and welded to said ridge, one or more of said corrugations being shortened and formed at their end into a ridge extending between the unshortened corrugations on each side, a plate member havin one of its edges welded to the end of sai corrugations and its op osite edge welded to said end member, an a pipe connection carried by said late member.

LE IS G. MCGLINTOOK.

shortened the plate P at its edges to the body of the tank, and a 5 

